Ok, use the Z5 to help with very light swirls. It will take several coats to acomplish. In doubt ask Sal Zaino yourself!
One other point Sal does make is the problems of "topping" Zaino. The oils used in waxes have an effect of trying to break through Zaino to get to the paint. His advise is not to do it as it will break bonding in time. Think if Zaino as a chain link fence, yes it's strong, but it can be penitrated by the oils as they try to migrate to the paint.
Anyway, it looks so nice when topped with carnuba, but use at your own risk.
Ask Sal if you are in doubt on any of this information.
One other point Sal makes, which is very important. After polishing your finish, WASH the car to strip the oils used in all polishes. Then you can bond Zaino to paint. A step I also did not do after polishing. Lesson leaned. Thanks Sal!
It's your paint and your eyes to satisfy, so top or not it's up to you, but if Sal had his way, there would be no carnuba.
Regards,
Deanski